拉莫尔时间、居留时间和隧穿时间  

Larmor Tunneling Time,Dwell Time and Tunneling Time

作　　者：舒正[1] 郝小雷[1] 李卫东[1] 

机构地区：[1]山西大学理论物理研究所,山西太原030006

出　　处：《山西大学学报（自然科学版）》2015年第2期298-303,共6页Journal of Shanxi University(Natural Science Edition)

基　　金：国家自然科学基金(11374197)

摘　　要：隧穿现象作为一种基本的量子现象,其隧穿时间一直就是人们争论的重要概念。现行居留时间定义中,使用的几率流密度是粒子的入射流密度,由此得到的隧穿时间会出现一些难以理解的现象,如Hartman效应。通过对拉莫尔时间和居留时间的研究,文章发现将居留时间中入射流密度改为隧穿发生后的稳定流密度,这样得到的隧穿时间会更易于理解,此时也可对拉莫尔时间除以透射率得到相同的隧穿时间。Tunneling time, as a fundamental concept in tunneling effect, plays an important basic concept to understand quantum theory. In a current concept, dwell time introduces some effects, which are hard to be explained, such as the Hartman effect. After carefully studying on Larmor time and dwell time, we ex- plore the reason could be flux density. Considering the tunneling as an stable solution, we replace the inci- dent flux with stable flux. By which, one reasonable time is obtained and the tunneling time is also equiva- lent to Larmor time divided by transmission probability.

关 键 词：拉莫尔时间 居留时间 隧穿时间 

分 类 号：O41[理学—理论物理]